TSW3085EVM: problems when running at low data rates

Part Number: TSW3085EVM

Tool/software:

Hi TI Forum,

I have problems when my FPGA output data rate is 48MSPS and my DAC interpolation is x16, but I don't encounter any problems with the spectrum when the data rate is 96MSPS and my DAC interpolation is x8.

DACCLK: 768MHz, Digital Mixer: fs/8